Home / 38,458,446,678.01-53,072,968,031.90-21,311,586,374.86

Finding the Fourth Proportional to 38,458,446,678.01, 53,072,968,031.90 and 21,311,586,374.86

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Solution

The fourth proportional to 38,458,446,678.01, 53,072,968,031.90 and 21,311,586,374.86 is: 29,410,161,878.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,458,446,678.01 : 53,072,968,031.90 = 21,311,586,374.86 : x
  2. Step 2: Convert to fraction form
    38,458,446,678.01/53,072,968,031.90 = 21,311,586,374.86/x
  3. Step 3: Cross multiply
    38,458,446,678.01x = 53,072,968,031.90 × 21,311,586,374.86
  4. Step 4: Simplify right side
    38,458,446,678.01x = 1,131,069,142,382,020,395,008
  5. Step 5: Solve for x
    x = 1,131,069,142,382,020,395,008/38,458,446,678.01
  6. Step 6: Final answer
    x = 29,410,161,878.14

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.